Engine Controls and Fuel - 1.4l (Luu) - Repair Instructions Cadillac ELR I

Crankshaft Position System Variation Learn

The Crankshaft Position Variation Learn procedure is required when the following service procedures have been performed, regardless of whether DTC P0315 is set

1. An engine replacement
2. An engine control module (ECM) replacement
3. A crankshaft balancer replacement
4. A crankshaft replacement
5. A crankshaft position sensor replacement
6. Any engine repairs which disturb the crankshaft to crankshaft position sensor relationship

The ECM monitors certain component signals to determine if all the conditions are met to continue with the Crankshaft Position Variation Learn procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool displays the signals of the following components

1. Crankshaft position sensors activity: If there is a crankshaft position sensor condition, refer to the applicable DTC set.
2. Camshaft position sensor signal activity: If there is a camshaft position sensor signal condition, refer to the applicable DTC set.
3. Engine coolant temperature (ECT): If the engine coolant temperature is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.

1. Verify no DTCs are set. If any DTCs other than P0300-P0308, or P0315 are set Refer to «DIAGNOSTIC TROUBLE CODE (DTC) LIST - VEHICLE»(/cadillac/elr/i-2013-2015/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) If DTC P0300-P0308, P0315, or no DTCs are set NOTE: The Crankshaft Position Variation Learn may have to be repeated up to 5 times before the procedure is successful
2. Engine Running at normal operating temperature, perform the scan tool Crankshaft Position Variation Learn procedure and follow the on screen instructions
3. Verify the scan tool displays Test Passed Successfully when completed If Test Passed Successfully is not displayed Verify that none of the following conditions exist The ignition switch is in the ON position until there is insufficient system voltage. An ECM power disconnect with the ignition ON that may have erased the crankshaft position system variation values and set DTC P0315 Interference in the signal circuit of the crankshaft position sensor Debris between the crankshaft position sensor and the reluctor wheel Worn crankshaft main bearings Excessive crankshaft runout A damaged crankshaft If a condition exists 3.1 Repair or replace as necessary. 3.2 Engine Running at normal operating temperature, perform the scan tool Crankshaft Position Variation Learn procedure and follow the on screen instructions. If no conditions exist, replace the K20 Engine Control Module If Test Passed Successfully is displayed
4. Clear all DTCs
5. Engine Running.
6. Verify a DTC is not set. If a DTC is set Refer to Diagnostic Trouble Code (DTC) List - Vehicle If a DTC is not set
7. All OK.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the repair

See Engine Control Module Replacement and K20 ENGINE CONTROL MODULE: PROGRAMMING AND SETUP for engine control module replacement, programming, and setup

Scheme 1

Engine Control Module Replacement

Scheme 2

Engine Control Module Bracket Replacement

Description

The engine control module (ECM) learns the airflow through the throttle body to ensure the correct engine speed. The learned airflow values are stored within the ECM. These values are learned to adjust for production variation and will continuously learn during the life of the vehicle to compensate for reduced airflow due to throttle body coking. Anytime the throttle body airflow rate changes, for example due to cleaning or replacing, the values must be relearned.

An engine that had a heavily coked throttle body that has been cleaned or replaced may take several drive cycles to learn out the coking. To accelerate the process, the scan tool has the ability to reset all learned values back to zero. A new ECM will also have values set to zero.

The engine speed may be unstable or a DTC may set if the learned values do not match the actual airflow.

Conditions for Running the Throttle Learn Procedure

Reset Procedure

1. DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0121, P0122, P0123, P0128, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P0351, P0352, P0353, P0354, P0601, P0604, P0606, P060D, P0641, P0651, P0697, P06A3, P1101, P1516, P2101, P2119, P2122, P2123, P2127, P2128, P2135, P2138, or P2176 are not set.
2. Vehicle in Service Mode.
3. The vehicle speed sensor (VSS) is 0 km/h (0 mph).

Learn Procedure

1. DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0121, P0122, P0123, P0128, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P0351, P0352, P0353, P0354, P0601, P0604, P0606, P060D, P0641, P0651, P0697, P06A3, P1101, P1516, P2101, P2119, P2122, P2123, P2127, P2128, P2135, P2138, or P2176 are not set.
2. The engine speed is between 1,400-4,000 RPM.
3. The manifold absolute pressure (MAP) is greater than 5 kPa.
4. The mass air flow (MAF) is greater than 2 g/s.
5. The ignition voltage is greater than 10 V.

Throttle Learn

Reset Procedure - Performed after the throttle body is cleaned or replaced

1. Vehicle in Service Mode, perform the Idle Learn Reset with a scan tool.
2. Engine running, monitor the Throttle Body Idle Airflow Compensation parameter with a scan tool. The Throttle Body Idle Airflow Compensation value should equal 0 %.
3. Clear the DTCs and return to the diagnostic that referred you here.

Learn Procedure - Performed after the ECM is programmed or replaced

1. Engine running for 3 minutes.
2. Monitor the Engine Speed with a scan tool.
3. The ECM will start to learn the new idle cells and the Engine Speed should start to decrease.
4. Vehicle OFF for 60 s.
5. Engine running for 3 minutes.
6. After the 3 minute run time the engine speed should be normal.
7. Once the engine speed has returned to normal, clear DTCs and return to the diagnostic that referred you here.

Engine Coolant Temperature Sensor Replacement (Water Inlet Assembly)

The engine coolant temperature sensor is integrated in the engine coolant thermostat housing. Refer to Water Inlet Replacement .

Scheme 3

Engine Coolant Temperature Sensor Replacement (Water Outlet)

Scheme 4

Mass Airflow Sensor with Intake Air Temperature Sensor Replacement

Scheme 5

Manifold Absolute Pressure Sensor Replacement

Scheme 6

Heated Oxygen Sensor Replacement - Sensor 1

Scheme 7

Heated Oxygen Sensor Replacement - Sensor 2

Scheme 8

Accelerator Pedal Position Sensor Replacement

Scheme 9

Throttle Body Assembly Replacement

Throttle Body Inspection and Cleaning

Note. Over extended time and mileage, deposits may accumulate on the back of the throttle valve plate. The source of the deposit is exhaust gas. Typically these deposits pose no problem. Occasionally the deposit may accumulate to a point where perceived pedal effort or throttle valve movement is effected. This procedure should not be performed on vehicles with mileage under 80,450 km (50,000 mi).

1. Remove the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
2. Inspect the throttle body bore and the throttle valve plate for deposits. You will need to open the throttle valve in order to inspect all surfaces.
3. Clean the throttle body bore and the throttle valve plate using a clean shop towel with an appropriate cleaner.
4. Install the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
5. Perform the Throttle/Idle Learn procedure. Refer to «Q38 Throttle Body: Throttle/Idle Learn»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .

Fuel Pressure Relief (CH 48027-100)

Special Tools

CH-48027-100 Digital Pressure Gauge

1. Remove the engine cover, if required.
2. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
3. Remove the fuel rail service port cap.
4. Wrap a shop towel around the fuel rail service port.
5. Connect the CH-48027-3 (3) to the fuel rail service port.
6. Connect the CH-48027-2 (2) to the CH-48027-3 (3).
7. Place the hose on the CH-48027-2 (2) into an approved gasoline container.
8. Open the valve on the CH-48027-2 (2) in order to bleed any fuel from the fuel rail.
9. Close the valve on the CH-48027-2 (2).
10. Remove the hose on the CH-48027-2 (2) from the approved gasoline container.
11. Disconnect the CH-48027-2 (2) from the CH-48027-3 (3).
12. Disconnect the CH-48027-3 (3) from the fuel rail service port.
13. Remove the shop towel from around the fuel rail service port, and place in an approved gasoline container.
14. Install the fuel rail service port cap.
15. Install the engine cover, if required.
16. Tighten the fuel fill cap.

Fuel Pressure Relief (Without CH 48027-100)

1. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
2. Remove the engine cover, if required.
3. Remove the fuel rail service port cap.
4. Wrap a shop towel around the fuel rail service port and using a small flat bladed tool, depress (open) the fuel rail test port valve.
5. Remove the shop towel from around the fuel rail service port, and place in an approved gasoline container.
6. Install the fuel rail service port cap.
7. Install the engine cover, if required.
8. Tighten the fuel fill cap.

Fuel Pressure Gauge Installation and Removal

Special Tools

EN-34730-91 Pressure Tester

For equivalent regional tools, refer to Special Tools (Service Tools) , Special Tools (Diagnostic Tools) .

1. Remove the resonator outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
2. Remove the protective cap from the test connection.
3. Attach the EN-34730-91 tester (1) to the test connection.
4. Install the resonator outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
5. Start the engine. Bleed the pressure tester at idling speed. Collect the exiting fuel in a suitable container. Read the fuel pressure from the pressure gauge.
6. Remove the resonator outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
7. Detach the pressure gauge EN-34730-91 tester from the test connection.
8. Install the resonator outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .

Fuel Tank Draining

Special Tool

CH 45004 Fuel Tank Drain Hose

1. Remove the fuel fill cap.
2. Insert the CH 45004 hose into the fuel tank until the bottom is reached.
3. Use a hand or air operated pump device in order to drain as much fuel through the fuel fill pipe as possible.

Removal Procedure

1. Drain the fuel tank. Refer to «Fuel Tank Draining»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions__fuel-tank-draining) .
2. Disconnect the evaporative emission and fuel pipe connectors (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
3. Loosen the hose clamps (2) and slide the filler tube away from the fuel tank.
4. Disconnect the fuel tank harness electrical connector (3).
5. Remove the rear coil springs. Refer to «Rear Spring, Insulator, and Jounce Bumper Replacement»(/cadillac/elr/i-2013-2015/remont/suspension-rear/#rear-suspension-system) .
6. Reinstall the shock fasteners (1) to the shock without the coil spring.
7. Support the rear axle with a suitable jack stand.
8. Remove the right lower wheel liner fasteners (1).
9. Remove and DISCARD the right rear axle bushing nuts (2) and bolts (3).
10. Reposition the rear axle (1) rearward and up.
11. Support the fuel tank with a suitable jack.
12. Remove the fuel tank strap bolts (1) and reposition the fuel tank straps toward the back of the vehicle.
13. Remove the fuel tank (1).
14. If replacing the tank, remove the fuel tank fuel pump. Refer to «Fuel Tank Fuel Pump Module Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions__fuel-tank-fuel-pump-module-replacement) .

Installation Procedure

1. If the tank was replaced, install the fuel tank fuel pump. Refer to «Fuel Tank Fuel Pump Module Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions__fuel-tank-fuel-pump-module-replacement) .
2. Install the fuel tank (1).
3. Install the fuel tank straps and tighten the fuel tank strap bolts (1) to 20 N.m (15 lb ft).
4. Return the rear axle (1) to its original position.
5. Support the rear axle with a suitable jack stand.
6. Install NEW right rear axle bushing nuts (2) and bolts (3).
7. Install the right lower wheel liner fasteners (1).
8. Remove the shock fasteners (1) from the shock.
9. Install the rear coil springs. Refer to «Rear Spring, Insulator, and Jounce Bumper Replacement»(/cadillac/elr/i-2013-2015/remont/suspension-rear/#rear-suspension-system) .
10. Connect the fuel tank harness electrical connector (3).
11. Slide the filler hose onto the tank and tighten the hose clamps (2) to 4 N.m (35 lb in).
12. Connect the evaporative emission and fuel pipe connectors (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
13. Refill the fuel tank.

Scheme 10

Fuel Pressure Sensor Replacement - Fuel Feed Pipe

Scheme 11

Fuel Tank Filler Pipe Replacement

Scheme 12

Fuel Feed Pipe Replacement (Engine Compartment)

1. Remove the engine compartment fuel feed pipe. Refer to «Fuel Feed Pipe Replacement (Engine Compartment)»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) , «Fuel Feed Pipe Replacement (Chassis)»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
2. Remove the drivetrain and front suspension frame. Refer to «Drivetrain and Front Suspension Frame Replacement»(/cadillac/elr/i-2013-2015/remont/frames-subframes-crossmembers/#frame-and-underbody) .
3. Remove the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
4. Remove the fuel feed pipe (1) from the engine compartment bulkhead plastic clips (2).
5. Remove the fuel feed pipe (1) from the plastic clips (2).
6. Remove the fuel feed pipe (1) from the plastic clips (2).
7. Disconnect the fuel pressure sensor electrical connector (3).
8. Disconnect the fuel feed pipe quick connect (4). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
9. Remove the fuel feed pipe (1) from the vehicle.

1. Install the fuel feed pipe (1) to the vehicle.
2. Connect the fuel feed pipe quick connect (4). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
3. Install the fuel feed pipe (1) to the plastic clips (2).
4. Connect the fuel pressure sensor electrical connector (3).
5. Install the fuel feed pipe (1) to the plastic clips (2).
6. Install the fuel feed pipe (1) to the engine compartment bulkhead plastic clips (2).
7. Install the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
8. Install the drivetrain and front suspension frame. Refer to «Drivetrain and Front Suspension Frame Replacement»(/cadillac/elr/i-2013-2015/remont/frames-subframes-crossmembers/#frame-and-underbody) .
9. Install the engine compartment fuel feed pipe. Refer to «Fuel Feed Pipe Replacement (Engine Compartment)»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) , «Fuel Feed Pipe Replacement (Chassis)»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .

Fuel Tank Fuel Pump Module Replacement

Special Tools

CH 45722 Fuel Sender Lock Ring Wrench

For equivalent regional tools, refer to Special Tools (Service Tools) , Special Tools (Diagnostic Tools) .

1. Remove the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
2. Disconnect the evaporative emission and fuel lines (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
3. Disconnect the electrical connector (2).
4. Using the CH 45722 wrench , remove the lock ring (1) by turning counter-clockwise.
5. Partially raise the fuel pump module and disconnect the vent valve connector (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions)
6. Remove the fuel pump module (1) and O-ring (2). DISCARD the O-ring.

1. Install a NEW O-ring (2) and the fuel pump module (1).
2. Connect the vent valve connector (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
3. Using the CH 45722 wrench , install the lock ring (1) by turning clockwise.
4. Connect the electrical connector (2).
5. Connect the evaporative emission and fuel lines (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
6. Install the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .

Scheme 13

Chassis Control Module Replacement

Fuel Pump Flow Control Module Replacement

Fuel Pump Flow Control Module Replacement

Scheme 14

Fuel Tank Pressure Sensor Replacement

Scheme 15

Fuel Level Sensor Replacement

Scheme 16

Note. There are several types of Plastic Collar Fuel and Evaporative Emission Quick Connect Fittings used on this vehicle. Bartholomew (1) Q Release (2) Squeeze to Release (3) Sliding Retainer (4) Global Connect (5) TI Loc (6) Safe Lock (7) The following instructions apply to all of these types of Plastic Collar Quick Connect Fittings except where indicated.

1. Using compressed air, blow any dirt out of the quick-connect fitting.
2. This step applies to Bartholomew style connectors ONLY. Squeeze the plastic quick-connect fitting release tabs.
3. This step applies to Q Release style connectors ONLY. Release the fitting by Pushing the tab toward the other side of the slot in the fitting.
4. This step applies to Squeeze to Release style connectors ONLY. Squeeze where indicated by arrows on both sides of the plastic ring surrounding the quick-connect fitting.
5. This step applies to Squeeze to Release style connectors ONLY. Push in the male side slightly in order to slide the retainer away from the retainers, squeeze where indicated by arrows on both sides of the plastic ring surrounding the quick-connect fitting.
6. This step applies to Sliding Retainer style connectors ONLY. Release the fitting by pressing on one side of the release tab causing it to push in slightly. If the tab doesn't move try pressing the tab in from the opposite side. The tab will only move in one direction.
7. This step applies to the Global Connector style only. Push the connector toward the tube in order to release the pressure. Press and hold down the release mechanism, and pull the connector straight out.
8. This step applies to the TI Loc style only. Push the connector toward the tube in order to release the pressure. Release the redundant latch (1) with two fingers or a flat bladed tool. Then press and hold down the bottom release mechanism (2) and pull the connector straight out.
9. This step applies to the Safe Lock style only. Push the connector toward the tube in order to release the pressure. Release the second latch (1) with two fingers. Then press and hold down the bottom release mechanism (2) and pull the connector straight out.
10. Using a clean shop towel, wipe off the male pipe end.
11. Inspect both ends of the fitting for dirt and burrs.
12. Clean or replace components as necessary.

1. Apply a few drops of clean engine oil to the male pipe end.
2. Push both sides of the quick-connect fitting together in order to cause the retaining feature to snap into place.
3. Pull on both sides of the quick-connect fitting to make sure the connection is secure.
4. Insert the tube in the connector until the retainer snaps in place.
5. Push down on the redundant latch (1) until it is fully engaged and snapped into position.
6. Insert the tube in the connector until the retainer snaps in place.
7. Push down on the second latch (1) in order to secure the connection.
8. Inspect for leaks using the following procedure: Turn the ignition ON, with the engine OFF for 2 seconds. Turn the ignition OFF, for 10 seconds. Turn the ignition ON, with the engine OFF for 2 seconds. Turn the ignition OFF. Inspect for leaks.

1. Remove the resonator outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
2. Disconnect the fuel feed pipe from the fuel rail. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
3. Remove the fuel injection ground fastener (1) and reposition the ground cable (2).
4. Disconnect the electrical connectors.
5. Remove the fuel injection fuel rail fasteners (1) and fuel injection fuel rail (2).
6. Remove the fuel injectors. Refer to «Fuel Injector Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .

1. Install the injectors. Refer to «Fuel Injector Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
2. Use new O-rings and lubricate with clean engine oil. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-specifications__adhesives-fluids-lubricants-and-sealers) .
3. Install the fuel injection fuel rail assembly (2) and tighten the fasteners to 8 N.m (71 lb in).
4. Reposition the ground cable (2), install the fuel injection ground fastener (1) and tighten to 4 N.m (35 lb in).
5. Connect the electrical connectors.
6. Connect the fuel feed pipe from the fuel rail. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
7. Install the resonator outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .

Scheme 17

Fuel Injector Replacement

Scheme 18

Evaporative Emission Canister Vent Solenoid Valve Replacement

Scheme 19

Evaporative Emission Canister Replacement

Scheme 20

Evaporative Emission Canister Purge Solenoid Valve Replacement

Scheme 21

Evaporative Emission Canister Control Valve Vacuum Hose Replacement

Scheme 22

Evaporative Emission System Vacuum Leak Detection Pump Replacement

Evaporative Emission System Cleaning

Special Tools

GE 41413 Evaporative Pressure and Purge Station

For equivalent regional tools, refer to Special Tools (Service Tools) , Special Tools (Diagnostic Tools) .

Inspection Procedure

1. Turn OFF the ignition.
2. Remove the evaporative canister purge valve. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
3. Lightly tap the evaporative canister purge valve on a hard surface.
4. Inspect for carbon particles exiting either of the vacuum ports. If no carbon particles were detected, but a blockage was detected during a diagnostic procedure, install the original evaporative canister purge valve. Continue with the cleaning procedure. If carbon particles are found during the inspection procedure, continue with the cleaning procedure. If a diagnostic procedure directed you to replace the evaporative canister purge valve and no carbon particles were detected, replace the evaporative canister purge valve. Return to the published service procedure.

Cleaning Procedure

1. Remove the evaporative canister. Refer to «Evaporative Emission Canister Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
2. Turn OFF the main valve on the GE 41413 purge station.
3. Disconnect the hose from the diagnostic station pressure regulator.
4. Using a section of vacuum hose, connect one end onto the evaporative pressure/purge diagnostic station pressure regulator.
5. Connect the other end of the vacuum hose to the canister side of the purge pipe.
6. Turn ON the main nitrogen cylinder valve and continue to discharge nitrogen for 15 seconds.
7. If the nitrogen does not clear the blockage, replace the purge pipe.
8. Return the evaporative pressure/purge diagnostic station to the stations original condition.
9. Install a new evaporative canister. Refer to «Evaporative Emission Canister Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
10. Install a new evaporative canister purge valve. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-repair-instructions) .
11. Return to the diagnostic table that sent you here.

Scheme 23

Ignition Coil Replacement

Spark Plug Usage

Ensure that the correct spark plug is installed. An incorrect spark plug causes driveability conditions. Refer to the Electronic Parts Catalog.

Spark Plug Inspection

1. Inspect the terminal post (1) for damage. Inspect for a bent or broken terminal post (1). Test for a loose terminal post (1) by twisting and pulling the post. The terminal post (1) should NOT move.
2. Inspect the insulator (2) for flashover or carbon tracking, soot. This condition is often mistakenly identified as a cracked insulator. This is caused by the electrical charge traveling across the insulator (2) between the terminal post (1) and ground. Inspect for the following conditions: Inspect the spark plug boot for damage. Inspect the spark plug recess area of the cylinder head for moisture, such as oil, coolant, or water. A spark plug boot that is saturated causes arcing to ground.
3. Inspect the insulator (2) for cracks. All or part of the electrical charge may arc through the crack instead of the electrodes (3, 4).
4. Inspect for evidence of improper arcing. Measure the gap between the center electrode (4) and the side electrode (3) terminals. This must be done carefully in order to avoid damaging the small diameter Iridium center electrode. Refer to «Ignition System Specifications»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-specifications__ignition-system-specifications) . An excessively wide electrode gap can prevent correct spark plug operation. Inspect for the correct spark plug torque. Refer to «Ignition System Specifications»(/cadillac/elr/i-2013-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luu-specifications__ignition-system-specifications) . Insufficient torque can prevent correct spark plug operation. An over torqued spark plug, causes the insulator (2) to crack. Inspect for signs of tracking that occurred near the insulator tip instead of the center electrode (4). Inspect for a broken or worn side electrode (3). Inspect for a broken, worn, or loose center electrode (4) by shaking the spark plug. A rattling sound indicates internal damage. A loose center electrode (4) reduces the spark intensity. Inspect for bridged electrodes (3, 4). Deposits on the electrodes (3, 4) reduce or eliminates the gap. Inspect for worn or missing platinum pads on the electrodes (3, 4) If equipped. Inspect for excessive fouling.
5. Inspect the spark plug recess area of the cylinder head for debris. Dirty or damaged threads can cause the spark plug not to seat correctly during installation.

Spark Plug Visual Inspection

1. Normal operation-Brown to grayish-tan with small amounts of white powdery deposits are normal combustion by-products from fuels with additives. Reddish orange deposits can indicate MMT fuel additive which is still used in some markets around the world (will cause misfire and cannot be burned off). MMT fuel additive use should be avoided.
2. Carbon Fouled-Dry, fluffy black carbon, or soot caused by the following conditions: Rich fuel mixtures Leaking fuel injectors Excessive fuel pressure Restricted air filter element Incorrect combustion Reduced ignition system voltage output Weak coils Worn ignition wires Incorrect spark plug gap Excessive idling or slow speeds under light loads can keep spark plug temperatures so low that normal combustion deposits may not burn off.
3. Deposit Fouling-Oil, coolant, or additives that include substances such as silicone, very white coating, reduces the spark intensity. Most powdery deposits will not effect spark intensity unless they form into a glazing over the electrode.

Scheme 24

Spark Plug Replacement

Scheme 25

Camshaft Position Actuator Solenoid Valve Replacement (Intake)

Scheme 26

Camshaft Position Actuator Solenoid Valve Replacement (Exhaust)

Scheme 27

Crankshaft Position Sensor Replacement

Scheme 28

Camshaft Position Sensor Replacement (Exhaust)

Scheme 29

Camshaft Position Sensor Replacement (Intake)

Scheme 30

Knock Sensor Replacement

Scheme 31

Intake Air Baffle Replacement

Scheme 32

Air Cleaner Outlet Duct Replacement

Scheme 33

Air Cleaner Resonator Outlet Duct Replacement

Scheme 34

Air Cleaner Element Replacement

Scheme 35

Air Cleaner Assembly Replacement

Scheme 36

Secondary Air Injection Check Valve Replacement

Scheme 37

Secondary Air Injection Pipe Replacement

Scheme 38

Secondary Air Injection Pump Replacement

Scheme 39

Secondary Air Injection Pump Air Cleaner Hose Replacement

See also:
• DIAGNOSTIC TROUBLE CODE (DTC) LIST - VEHICLE
• DIAGNOSTIC REPAIR VERIFICATION
• K20 ENGINE CONTROL MODULE: PROGRAMMING AND SETUP
• Front Bumper Fascia Removal and Installation
• Battery Negative Cable Disconnection and Connection
• Control Module References
• Fastener Caution
• Water Inlet Replacement
• Cooling System Draining and Filling
• Heated Oxygen and Oxygen Sensor Caution
• Adhesives, Fluids, Lubricants, and Sealers
• Special Tools (Service Tools)
• Special Tools (Diagnostic Tools)
• Lifting and Jacking the Vehicle
• Gasoline/Gasoline Vapors Warning
• Safety Glasses Warning
• Rear Spring, Insulator, and Jounce Bumper Replacement
• Drive Motor Battery Replacement and Shipping Preparation
• Rear Wheelhouse Liner Replacement (Left)
• Rear Compartment Side Trim Replacement - Right Side
• Safety Glasses and Compressed Air Warning
• Relieving Fuel Pressure Warning
• Fuel Pipe Fitting Warning
• Ignition System Specifications
• Engine Control Module Replacement
• Fuel Tank Draining
• Fuel Tank Fuel Pump Module Replacement